Phosphoric Acid 10% ACS Grade

Name: Quick Facts: Phosphoric Acid 10% ACS Grade
Creator: Alliance Chemical
License: https://alliancechemical.com/policies/terms-of-service

Phosphoric Acid

Active ingredient: phosphoric acid, also known as orthophosphoric acid
CAS number: 7664-38-2
Formula: H3PO4
Molecular weight: 97.995 g/mol
Concentration: 10%
Grade: ACS Reagent Grade
Appearance: Clear, colorless liquid
Boiling point: 100-105 °C (212-221 °F) (aqueous solution)

How it is classified for shipping

UN number: UN1805
Hazard class: 8 Corrosive
Packing group: III

Proper shipping name Phosphoric acid solution

Hazards

Signal word Danger

Corrosive

Summary only. Read the SDS and the container label for complete hazard and handling information.

SDS also in

Who uses it

Analytical testing laboratories, Research and development teams, Quality control departments, Educational science programs

Product quick facts

CAS 7664-38-2H3PO4UN1805

Phosphoric Acid 10% ACS Grade (CAS 7664-38-2) is a 10% ACS reagent-grade liquid with molecular formula H3PO4 and a molecular weight of 97.995 g/mol, meeting American Chemical Society specifications for analytical use. Its active ingredient, phosphoric acid, is also known as orthophosphoric acid. It ships as DOT Hazard Class 8. Alliance Chemical supplies this product in 7 container sizes from 1 Quart to 330 Gallon (16 pack options) with 1-2 business day shipping from Taylor, TX on in-stock orders, plus SDS and lot-specific Certificate of Analysis.

Pack sizes 7 container sizes (1 Quart to 330 Gallon) · 16 pack options
Purity / spec 10% ACS Reagent Grade
Lead time In-stock orders placed by Mon-Thu 2 PM CT / Fri 12 PM CT typically ship within 1-2 business days.
Regional availability View state-by-state shipping pages

Request Bulk Quote (512) 365-6838

Stock footage.

How it ships.

Regulated products are packed, marked, and labeled for hazmat transport, from one quart to a pallet of drums.

Most stocked orders ship in 1–2 business daysOrder cutoff: Mon-Thu 2 PM CT / Fri 12 PM CT
Hazmat packing, marking, and labelingPacked by staff trained under DOT rule 49 CFR 172.704
UPS Ground for bottles, jugs, and up to three pailsLTL freight for four or more pails, drums, and totes. Liftgate on request.

Ships with
FedEx Freight
Southeastern Freight Lines

Buying for a company or agency?

Pay by card at the listed price, or order on Net 30 terms once your credit is approved. For NSN and contract requirements, send an RFQ.

CAGE code: 1LT50
UEI: DCTCZDY3BLD3
Primary NAICS: 424690
Ownership: Woman-Owned
Federal supply: DLA Supplier
Terms: Net 30 on approved credit, W-9 on request

Apply for Net 30 Email a purchase order Vendor qualification documents

Gloved hands strapping four blue chemical drums to a pallet at a warehouse loading dock — Illustration.

Safety data sheets and certificates.

Find an SDS or TDS by product name or CAS number. Certificates of analysis are free on request.

Find an SDS or COA

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Description
Product Documents
Chemical Profile

Product Overview

Phosphoric Acid 10% ACS Grade is a pre-diluted aqueous solution of phosphoric acid (H3PO4) prepared with high-purity deionized water. This 10% concentration provides a convenient, ready-to-use form that eliminates the need for on-site dilution of concentrated stock. Appearance: Clear, colorless liquid. Meeting ACS Reagent Grade specifications, this product is suitable for analytical and laboratory applications requiring controlled purity and documented impurity limits.

Supplied by Alliance Chemical in sizes ranging from 1 quart to 330-gallon IBC totes, this solution is ideal for operations requiring consistent 10% strength with minimal handling risk compared to higher concentrations.

Key Properties

Chemical Name: Phosphoric Acid
Synonyms: Orthophosphoric Acid, H3PO4
Chemical Formula: H3PO4
CAS Number: 7664-38-2
Molecular Weight: 98 g/mol
Concentration: 10% (w/w)
Grade: ACS
Specific Gravity (20°C): 1.057
Boiling Point: 100-105 °C (212-221 °F) (aqueous solution)
Flash Point: N/A
Appearance: Clear, colorless liquid
Solubility: Fully miscible with water

Common Applications

Metal Treatment & Rust Removal: Converts iron oxide to iron phosphate, providing corrosion-resistant surface preparation for coatings.
Food & Beverage Processing: Acidulant and pH regulator used in carbonated beverages, dairy processing, and sugar refining.
Water Treatment: Controls scale formation and adjusts pH in cooling towers, boilers, and municipal water systems.
Fertilizer Production: Primary feedstock for manufacturing phosphate fertilizers and animal feed supplements.
Laboratory & Analytical: Used as a reagent in chromatography, titration, and buffer preparation.

Safety Precautions

Phosphoric Acid solutions are corrosive and can cause severe burns. Handle with appropriate PPE, including chemical-resistant gloves, splash goggles, and protective clothing. Use in well-ventilated areas to minimize vapor inhalation. Store in a cool, dry place in HDPE or glass containers away from bases and metals.

PPE Requirements: Wear acid-resistant gloves, safety goggles, and face shield when handling concentrated solutions. In case of skin contact, wash immediately with plenty of water. In case of eye contact, rinse continuously for at least 15 minutes. Refer to the Safety Data Sheet (SDS) for full emergency response procedures.

Shipping: UN 1805, Phosphoric acid solution, Class 8, PG III.

Benefits

Pre-Diluted Convenience: Ready-to-use concentration eliminates on-site dilution errors and reduces handling risk.
Consistent Purity: Manufactured to strict quality standards for reliable performance in critical applications.
Versatile Sizing: Available from quart bottles to IBC totes to support any scale of operation.

Related Products

Related reading: Phosphoric acid: all grades and concentrations

Frequently Asked Questions About Phosphoric Acid 10% ACS Grade

What is Phosphoric Acid 10% ACS Grade and what is its chemical formula?

Phosphoric Acid 10% ACS Grade is listed under CAS 7664-38-2 (PubChem reference search). The catalog formula is H3PO4. The listed molecular weight is 97.995 g/mol. For solutions and blends, identity values may describe a constituent; consult the product SDS for composition.

What are the physical properties of Phosphoric Acid 10% ACS Grade?

Catalog reference information for Phosphoric Acid 10% ACS Grade: form: Liquid; appearance: Clear, colorless liquid; melting point: 0 °C (32 °F) (aqueous solution); boiling point: 100-105 °C (212-221 °F) (aqueous solution); specific gravity: 1.057; solubility: Fully miscible with water; reference values may describe a pure substance rather than the supplied concentration or blend. Confirm applicable conditions and specifications in the product documents; these values are not batch test results.

What grade and purity of Phosphoric Acid 10% ACS Grade does Alliance Chemical offer?

Alliance Chemical lists Phosphoric Acid 10% ACS Grade in ACS reagent grade with a concentration or assay of 10%. Check the product specification for the measurement basis and acceptance limits. A grade label alone does not establish certification or suitability for a regulated application. For batch results, request a COA using the product name and lot number.

What are common industrial applications of Phosphoric Acid 10% ACS Grade?

To evaluate it for your process, compare the listed grade, concentration and product specifications with your requirements. Contact Alliance Chemical to confirm any application-specific documentation or certification before ordering.

What are the hazards of Phosphoric Acid 10% ACS Grade and where do I find handling guidance?

Per its GHS classification (SDS Section 2), Phosphoric Acid 10% ACS Grade carries the signal word Danger and the following hazard statements: H314 CAUSES SEVERE SKIN BURNS AND EYE DAMAGE. Product-specific first aid, fire-fighting, spill response, handling, storage, exposure controls/PPE, and disposal guidance are in SDS Sections 4-8 and 13 — always consult the SDS before use. Download the SDS.

What is the DOT shipping classification for Phosphoric Acid 10% ACS Grade?

The catalog transport entry lists UN1805, hazard class 8, packing group III. Consult SDS Section 14 and confirm the requirements for your selected pack size and shipping destination with Alliance Chemical.

How must Phosphoric Acid 10% ACS Grade waste be disposed?

Consult SDS Section 13 for disposal information for Phosphoric Acid 10% ACS Grade. Disposal requirements depend on the resulting waste, contamination and location. Have your site's responsible waste professional determine the appropriate waste classification and disposal method. View the SDS.

Does Alliance Chemical provide an SDS and COA for Phosphoric Acid 10% ACS Grade?

Search the document library for Phosphoric Acid 10% ACS Grade. The SDS is also available here. A sample COA describes specifications and does not establish the results for your shipment. To request a lot-specific COA or confirm document availability, contact Alliance Chemical with the product name and lot number.